Update interface reference for csrf.token_manager
Update interface reference for csrf.token_manager


The csrf.token_manager is an implementation of CsrfTokenManagerInterface
Fix the label and link to the reference
Update Usage section to include creation of a new token
romainneutron/Silex,romainneutron/Silex,gencer/Silex,romainneutron/Silex,silexphp/Silex